921-40-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 921-40-4 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 9,2 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 921-40:
(5*9)+(4*2)+(3*1)+(2*4)+(1*0)=64
64 % 10 = 4
So 921-40-4 is a valid CAS Registry Number.
InChI:InChI=1/C11H18FNO9/c1-3(15)13-5-7(18)9(12)11(21,10(19)20)22-8(5)6(17)4(16)2-14/h4-9,14,16-18,21H,2H2,1H3,(H,13,15)(H,19,20)/t4-,5-,6-,7-,8-,9?,11+/m1/s1